BORAGINEA. 371 
5. Ehretia scabra, Kth. et Bouché, Ind. Sem. Hort. Berol. 1847, coll. p. 12; 
Walp. Ann. i. p. 524. 
Mexico? 
—~ 6. Ehretia tinifolia, Linn.; Griseb. Fl. Brit. W. Ind. p. 481. 
Souta Mexico, Yucatan (ex Grisebach).—Wust Inpizs. 
4, COLDENTA. 
Coldenia, Linn. Gen. Plant. n. 173; Benth. et Hook. Gen. Plant. i. p. 841. 
Diffuse herbs. Ten species are known, one of which is widely dispersed in the warm 
regions of the Old World; the rest are Western-American, both north and south, 
including the Galapagos. 
1. Coldenia canescens, DC. Prodr. ix. p. 559; A. Gr. Synop. Fl. N. Amer. ii. 
p. 181. 
Stegnocarpus canescens, Torr. in Pacif. Railr. Rep. ii. p. 169, t. 7. 
Texas to Arizonaw—NortH Mexico, Monterey (Katon & Edwards, 47), Monclova, 
Coahuila (Palmer, 874), Sierra Madre, Coahuila (Palmer, 864), mountains of San 
Miguelita, San Luis Potosi (Schaffner, 631). Hb. Kew. 
2. Coldenia greggii, A. Gr. Synop. Fl. N. Am. ii. p. 182; Proc. Am. Acad. 
x. p. 48. 
Pitilocalyx greggi, Torr. Pacif. Railr. Rep. 11. t. 8. 
Texas; New Mexico.—Norta Mexico, without locality (Gregg), San Lorenzo de 
Laguna (Palmer, 865). Hb. Kew. 
3. Coldenia hispidissima, A. Gr. in Proc. Am. Acad. v. p. 340; Synop. Fl. N. 
Am. ii. p. 182. — 
Eddya hispidissima, Torr. Pacif. Raiir. Rep. ii. t. 9. 
South Utan to Arizona and Western Trexas.—NortH Mexico, Monclova, Coahuila 
(Palmer, 898). Hb. Kew. 
5. RHABDIA. 
Rhabdia, Mart. Nov. Gen. et Sp. ii. p. 186; Benth. et Hook. Gen. Plant. ii. p. 842. 
A shrubby monotype. 
1. Rhabdia lycioides, Mart. Nov. Gen. et Sp. ii. p. 136, t.195 ; Miers, Contrib. 
Bot. ii. p. 222, cum spp. 2 et 3, t. 84; Mart. Fl. Bras. xix. t. 9; Hook. Ic. Pl. t. 823. 
Soutn Mexico, Cordillera of Oaxaca, at 2500 feet (Galeotti, 1774).—Brazit; Tropical 
Arrica; Tropical Asia. Hb. Kew. 
6. TOURNEFORTIA. 
Tournefortia, Linn. Gen. Plant. n. 192; Benth. et Hook. Gen. Plant. i. p. 843. 
Trees and shrubs. About 100 species, generally diffused in warm countries. The 
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